898388749 has 8 divisors (see below), whose sum is σ = 976944888. Its totient is φ = 822689280.

The previous prime is 898388747. The next prime is 898388779. The reversal of 898388749 is 947883898.

It can be written as a sum of positive squares in 4 ways, for example, as 746655625 + 151733124 = 27325^2 + 12318^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 898388749 - 2¹ = 898388747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (898388741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713512 + ... + 714769.

It is an arithmetic number, because the mean of its divisors is an integer number (122118111).

Almost surely, 2^898388749 is an apocalyptic number.

It is an amenable number.

898388749 is a deficient number, since it is larger than the sum of its proper divisors (78556139).

898388749 is a wasteful number, since it uses less digits than its factorization.

898388749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428335.

The product of its digits is 27869184, while the sum is 64.

The square root of 898388749 is about 29973.1337867765. The cubic root of 898388749 is about 964.9128753436.

It can be divided in two parts, 89 and 8388749, that added together give a palindrome (8388838).

The spelling of 898388749 in words is "eight hundred ninety-eight million, three hundred eighty-eight thousand, seven hundred forty-nine".